Find the times when you're 65 feet off the ground.

So, there's a Ferris wheel.
I have to find out the times when you are 65 feet off the ground within the first four minutes, with t being the time in minutes, with this equation:

I also had to solve it graphically, which was easy, so I know there are two points in time at which you are 65 feet off the ground(something like ~2.23 and ~3.77 minutes). What I'm having trouble with is solving it algebraically.

This is my thought process:

I'm pretty sure I'm doing this right.. but when I get to the last step, it gives me something like t = -.2324981381

I've plugged that in and it is obviously not the right answer. It gives me 65 as it should, but it doesn't correspond to the answers I get when solving graphically. Any help with what I'm doing wrong?